Pneumatic actuators, commonly known as pneumatic heads or pneumatic actuators, are divided into three categories based on their energy sources: pneumatic, electric, and hydraulic. Each has its own characteristics and is suitable for different situations. Pneumatic actuator is a type of actuator.

Pneumatic actuators can also be divided into two types: single acting and double acting: the switching action of the actuator is driven by a gas source, which is called Double Acting. The SpringRETURN actuator is only driven by the air source when it is turned on or off, and the opposite action is reset by the spring.